Please don't be so quick to label him a sex addict. He could be,or he could just be a serial cheater. Many serial cheaters are quick to latch on to the SA label,because it gives them an excuse for past affairs, and future affairs. They blame their "addiction," and they can't help it, they have a "disease." Only a certified sexual addiction therapist can diagnose if he is a SA. There is no cure for SA. The possibility of cheating again is extremely high. But,that's true of serial cheaters as well.
SA, or serial cheater, neither bode well for a successful reconciliation.
Google polygraph administrators in your area. Schedule a test. Tell him you are going to take his timeline and base questions for the test on his timeline. With a serial cheater they're very,very comfortable in their lies and manipulations. You need to have a foundation of truth, whether you decide to attempt reconciliation, or decide to separate.
What is he doing to become a safe partner? The minimum...
Complete timeline, verified by the polygraph.
Full transparency. You get full access to all accounts and the phone. Passwords included.
He goes total NC with all OW.
He drops any friends who knew of the affairs.
No opposite sex friends.
He answers all of your questions, without anger or defensiveness. And zero blame.
A complete std panel.
No social media.
He is accountable for his time away from you.
If his affairs were with coworkers, he finds a new job.
He is proactive in healing the damage he has caused you, himself, and the marriage.
And anything else you need to begin to feel safe.
Your only job is to care for yourself and the kids. Get tested for stds. And you need to call the other women's husbands,and inform them of the affair. They deserve to, know for all of the reasons you deserve to know.
Do NOT share this site with him. One of the worst mistakes a BS can make is to share this site with a freshly caught WS. This is your safe place.
[This message edited by HellFire at 4:53 PM, Tuesday, February 7th]